Britney Spears got her knickers in a twist revealing a little more than she had hoped for, on the Anaheim leg of her tour recently.

The pop princess - who shocked audiences by revealing that her "p***y was hanging out" in Florida last month - made another unfortunate panty-related mistake during that time of the month.

As Britney danced to her Austin Powers track Boys a tampon could be seen hanging freely from her knicker line.

Note to self Britney - wear clothes that fit properly or cover up your nether regions on stage!